Educational device



Aug. 26 1924.

W. F. WELTY EDUCATIONAL DEVICE Filed Oct.

[W7/YES SES son Patented Aug. 26, 1924.

Umrrn Sm'frrg 1,506,2l) An1511"a@wr orner-z.

T0' m2 whom it may omoem:

Bo if: known man; I, Wmlm F. www, enigen 0f im Smog, @Siding at @umbau-mr, in th@ @Quinny of ohms and "State ofy Nw Maxim, have invetd @fermi-n mmsbrrtuanwm wi preferld embodiment of my invention, the numeral f7 d'esvntes a base which may be rigialy, hingerly or othbrwise positioned upon 'a Sut'ble support. From the base rises Bok or stndafrd 8 uponvvhich the movable memberfs of the dev-ico are mounted. It will of course, be n'derstood that che stanlard or b'a'ok may be used Vindependently of thoV has@y 7 and 'sup'ended upon a suitable support when it is desred to el- By bh: bose 7. As' best sa'n in Figure 2,

ihmds beyond tlm periphery of th smaller plietelj ll th spaces provild in the circle.

Tho *ne-xt largr disk is `provided with ifowels, sullxsg prefixes7 difphthongs, and lany oblrer combination of letters found `de Vsixftafblo It is ail@ provided 'Wthan outer rotatedg-it liin understood that rotation disks Vat.the linesof demarcation thereon are lateraill'y 'irjecting pi1is`il4' vvliichkfo'rlm part of the means for retardingr rotation of the disks. The means rcooperating with the pins consists of a" pointer 15 secured at its zovfer end to the standard 8 in any suitable manner belen the disks and projects forwardly therefrom to provide a support for upwardly extending resilient members 16, one being provided for each disk. These resilient memlbers preferably consist of pieces of resilient metal l? which have their lower ends bentvan'd fastened to the pointer 15 and incline upwardly 'and outwardly toward one side of the device. The outer end 1,7 of each strip projects into the path of n1ove ment of 'the pins of its respective disk and is provided with an offset portion 18 forming a pocket into which the pins 14C may seat. From this particu-liar construction of the: mem'bers'l itv will lbe obvious that the disks willfbe positively 'stopped astheir rate 'arrangement of the pointer a support for the outer end of the axfle is provided. The upper free'endfof frthelpointer is disposed adjacent theperiphery of the smaller disk and is used'forpointingj to .the indicia on the two disks. It will beine-ted that the inner end of thes-leeve of the small disk is equipped with a lpair of spaced flanges between which the center portionof the small disk seats to be fastened thereto. T'he center portion;` of the large disk is loosely mounted between the Yinner flangefof said sleeve and a collar mounted on the axle as shown. In order to increase the complexity of the probl-ems when desired, a chart 19 is supported above the disks by a bolt 2O countersunk in the standard 8 above the disks. This chart in the present instanceis provided with a --pluralitv of horizontal grooves or passages 21 which may be formed by groot/"ing the chart or providing spaced guides 22, lbetween each pair of which is guided a slide 23 having onlthe face thereof a plurality of vertical lines between which are printed or otherwise provided, numbers, letters or thelike, and on the backs thereof T-shaped extensions to fit the guides. lt will therefore be obvious that the slides 23 may be manipulated to lcause the lines thereof to align to form a plurality of vertical columnsof ligures o1' letters.

Other means are also provided for delinitely outlining the particular problem desired to be solved` and which consists of a. pair of plates 24 each of which has a pair of its .opposi mar. ina edges. about to overlap-ua ai? titanes es sa the @has 19 as clear y seen in Fi ures 2 and 3. By this construction, it Wil be seen that the plates 24 are slidable upon the chart and when moved so that their inner edges abut, will completely conceal the various indicia `upon the chart. The plates may be moved or shifted from one side of the chart to the other so that any chosen row of indicia on the slides 23 may be viewedwbetween `the plates while the remaining rows are con- Vcealed behind the plates.` By reason of the fact that the chart 19y is arranged directly ia above the'rotatin disks, it will be obvious that when the dis 's stopf rotating, the' rows of indicia, or at least one row thereof on the chart will be arranged directly .under one or more rows 'of the chart `so that long rows of f. figures may be presented to the studentrfor addition or other problems :The front of these `pla'tesu'is equipped vwith writing ysul'- faces such as that given/to black boards whereby othervproblems than those provided on the chart may be presented to the student. To illustrate Athe useofthe device itwill befobvitus that thefsmall disk l-l maybe r0- tated anda studentcalled upon to ivea word beginning with theletter stoppingat the pointer. Thelar e ,disk 10' nia'yfbeA rotated at varying speedgs and a student called upon to iforlll sword beginningwithone-jof the lettersonlthe diskll and ending with Whichever 'suiix -stops at, the top of? the ,disk 12.' Furthermore; the disks-may be-fcaused to rotate atv various speeds and the student called upon to solve problems `with the indicia which stopat the pointer. In View of the-` fact that the disks are independently rotatable and may be stopped simultaneously by hand the student will he held in suspense with his mind alert to quickly calculate the numbers stopping at the top of the disks. In educational devices wher-em only one disk is rotatable, the` student has .an opportunity to ascertain one of the numbers prior to the stopping of the rotatable disk Aand therefore is not called upon to exercise theV alertness necessary to quickly solve a problem with my present invention. To render the problems more intricate, the chart 19 may be used in conjunction with the rotatable disks whereby different rows of figures may be selected to be added in connection with num-"4 bers on the rotating disks. It will therefore be obvious that besides providing a highly educational device for the school room, one has been provided which will provefinteresting to juvenile students who will delight inf:

the use of such devices at home and will therefore rapidly develop their intellectual powers and render them extremely Valert and accurate.

The foregoingidescripton and accom-Q panying drawingf'having reference to what might be considered to be the ap roved or preferred form oi' my invention, Ildesire it to be understood that I may make such changes in the construction, combination and arrangement of parts, materials, dimensions, etc., as may prove expedient and fall Within the scope of the appended claims.

Havin thus fully described my invention what I c aim as new and desire to secure by Letters Patent, is:

1. A device of the character specified comprising a dial rotatably mounted thereon, said dial being provided With a plurality of projecting pins, and a resilient member adapted to brush the pins as the dial revolves, and said resilient member being provided With a recess adapted to receive one of the pins of the dial When the latter comes to a. standstill.

2. An educational device comprising a standard, a disk rotatably mounted thereon, said disk being provided with a plurality of circumferentially spaced pins, a resilient member secured to said standard and projecting into the path ci said pins, said inem ber being inclined relative to the standard and provided with an offset portion for receiving any one of said pins.

In testimony whereof I aiiix my signature in presence of two Witnesses.

WILLIAM F. VVELTY.

W'itnesses H. G.NISUERLY, FANNiE E. JENNINos. 

